package com.linyue.util;

import sun.plugin2.message.Message;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Utils {
    public static String code(String str){
        try {
            MessageDigest md=MessageDigest.getInstance("MD5");
            md.update(str.getBytes());
            byte[]byteDigest=md.digest();
            int i;
            StringBuffer buf=new StringBuffer("");
            for(int offset=0;offset<byteDigest.length;offset++){
                i=byteDigest[offset];
                if(i<0)
                    i+=256;
                if(i<16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
            //32位加密
            return buf.toString();
            //16位的加密
            //return buf.toString().subString(8,24);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return  null;
        }
    }
    
}
